There are several sources of energy that could provide the activation energy needed for a chemical reaction to take place. Usually it is thermal energy, but photoexcitation (excitement by light energy) and electrochemical activation (excitement by electricity) are also commonly used.
The energy required to begin a reaction is known as activation energy. The most common form of activation energy is going to be heat. For example: combustible materials will begin reacting with oxygen (burning) when they are heated enough. Typically, if another form of energy is used, it will ultimately be turned into thermal energy. For instance, the kinetic energy found in an internal combustion engine can compress a cylinder full of air, which will cause the diesel fuel that is sprayed into the cylinder to combust. Although it was kinetic energy that was used, the end result was that the temperature of the gas increased, which caused the combustion to occur.
Another very common reaction that we depend on is photosynthesis. This reaction actually absorbs energy, rather than just requiring some energy to get it started. The energy for that reaction comes from sunlight.
You can use heat, or electrical energy as forms of energy for a chemical reaction
It is usually heat energy, sometimes it is electric energy, and sometimes it is kinetic energy like stirring, not to be confused with average kinetic energy (temperature)
The chemical energy in a substance is a type of potential energy stored.
No. Chemical reactions actually release energy. It may, however, need an initial small amount of energy to start the chain reaction, but the reaction itself creates its own energy.
The amount of energy a reaction needs to take place is called activation energy. When this much energy is present, a chemical reaction can occur.
Yes
Endothermic reactions need heat. Exothermic reactions give off heat.
If your question is ''What causes the activation energy required in a chemical reaction to lower down?'' Then my answer to your question would be that the temperature factor is either more than to what the enzymes needed or less than what is needed by the enzymes to function. However the optimum temperature mostly for an enzyme to be active at the fullest can be till 40 degrees Celsius.
friction
A chemical reaction is; when there is a chemical change taking place from energy or shifting of molecular structure.
It refers to the energy changes that take place during a chemical reaction.
The amount of energy a reaction needs to take place is called activation energy. When this much energy is present, a chemical reaction can occur.
no
If thermal energy must be added to a chemical reaction for the reaction to take place the reaction is endothermic.
no
Endothermic
This is an endothermic reaction.
Yes
chemical energy is in a cell because of the chemical reaction caused to create the energy in the first place.
heat & electric energy !
Heat energy is necessary for some chemical reactions to occur. Some chemical reactions are endothermic meaning they require or absorb energy for a chemical reaction to occur. Other chemical reaction are exothermic meaning they release energy when the chemical reaction takes place..